The change in the annually averaged erythemal (sunburning) ultraviolet-B radiation (UV-Bery, J/m2/year) between 1979 and 1998 at sites in Central and South America where amphibian declines have been documented. UV-Bery was significantly greater in Central America compared to South America across all years. UV-Bery increased significantly at sites in Central and South America during the time period, with increases in UV-Bery being greater in Central America. Data are annual mean ± SE. From Middleton et al. . Reprinted with permission from John Wiley & Sons, Inc.